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Multi-wavelength Raman Spectroscopy of Nanodiamond Particles

Published online by Cambridge University Press:  01 February 2011

Paul William May ,
Philip Overton ,
James A Smith  and
Keith N Rosser
Paul William May
Affiliation:
paul.may@bris.ac.uk, University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, United Kingdom, +44 (0)117 9289927, +44 (0)117 9251295
Philip Overton
Affiliation:
p.overton@bris.ac.uk, University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, United Kingdom
James A Smith
Affiliation:
James.Smith@bristol.ac.uk, University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, United Kingdom
Keith N Rosser
Affiliation:
keith.rosser@bris.ac.uk, University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, United Kingdom
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Abstract

We have used Raman spectroscopy with 3 different laser excitation wavelengths (near infrared: 785 nm, green 514 nm, and ultraviolet 325 nm) to study diamond particles as a function of particle size, ranging from 5 nm to 100's of μm. We find that the position of the 1332 cm−1 diamond line varies with particle size as a direct result of heating by the laser. This effect is more significant for lower wavelengths, probably as a result of the increased absorbance by nanodiamond particles in the UV.

Keywords

diamondRaman spectroscopynanoscale
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1039: Symposium P – Diamond Electronics–Fundamentals to Applications II , 2007 , 1039-P15-03
Copyright
Copyright © Materials Research Society 2008

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